Bar mechanism for type-writing machines.



G. PETERMANN.

BAR MEHNISM POR TYPE WRITING MACHINES.

APPLIGMJLON FILED JAN.17,1911.

"lmll Patented Dec. 9, 1913.

v4UNITED sTATEs PATENT OFFICE TT PETERMANN, 0F GROTON, NEW YORK, ASS'EGNOR T0 STAAIHAJJ) mwmm COMPANY, 0F GRGTQN, NEW YORK, A. CORI'QRATION 0F NEW YORK.

BAR MECHANISM FOR TYPE-WRITING MACHINES:-

Specification of Letters Patent.

application mea January 17, 1911. serial No. 303,123.

To all 'whom it may concern Be it known that I, O'rro PETERMANN, a citizen. of thePepublic of Switzerland, and a resident of Groton, county of Tompkins, and State of New York, have invented certain new and useful Improvements 1n Bar Mechanism for Type-Writing Machines, of which the following 1s a full, clear, and exact description.

This invention relates more particularly to the means for ivotally supporting the type-bars of visib e front-str1ke typewrit- 1n machines he primary object of the invention is to rev-ide a hanger in which a type-barmay e pivotally heldi in such a lway as to have a comparatively large but narrow bearing surt face between the type-bar and the hanger,

' on the line III- and atthe same time provide means whereby adjustment ma be secured 1n order to take up any wear t at may occur, thus overcoming many of the objections incident to devices of this kind as ordinarily oo nstructed. I

l Another objectief the invention 1s to provide a simple and ecient hanger for each type-bar which maybe independently snp ported upon the machine frame, and which hanger may bereadily made and assembled. A further object of the invention 1s to provi-de simple means for reducing the friol tion including a vball bearing for the typebar, and to provide a hanger in which'each individual type-bar may. have the wear thereof adjusted without removing the hanger and th-e type-bar from. the machine.

With these and other objects in View, the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this speciication, and will then be pointed out in the claims at the end ofthe descrip tion; I i i In the drawings, Figure 1 is a longitudinal section of one form of machine embodying my invention. Fig. 2 is a detail plan view of the hanger4 and a type-bar. Fig. 3 is an enlarged vertical section, taken is aside 4,elevation looking at the hanger from the side opposite to that shown' in Fig. 1, and showing the' type-bar partly broken away'.

The frame I0 has a. transversely-extend- 5 ing bar 11 provided-l' with hooked supports rame 10.A an

II of Fig. 4; and Fig. 4'

I2 to which are pivoted the keyflevers 13a These key-levers are arranged groups and each key-lever is provided with a Beruf 142 which, is pivotally held to. the hooked ends of the supports 12. 'Each key-lever is normally held in a horizontal position by means of a spring 15, one end of which is4 attached to the key-lever and the other end to a part'of a fixed bar 16. A Iinlt I7 connects the inner end of each key-lever to aV type-bar 18', and each type-bar has a head 19 on which are a plurality of characters which are adapted to print upon the work sheet carried by a laten 20.. The platen 20 is mounted in t 'e transversely-movable carriage 21,. and said carriage may be provided: with the usual mechanisms for letter and line spacing, and said carriagenand platen may be folded' over the keyboard or otherwise eld as desired. p

To pivotally hold the type-bars I8, I provide a hanger 22 for each type-bar. This hanger comprises two members 23 and 24, the former' serving as a su porting member, and theylatter to hold an retain the typebar properly to said supporting member. The member 23 -is cut awayat 25 and-has two angular feet 26 which are spacedZ apart ,and provided with threaded apertures. The

screws 27 `pass through openin s in a re- '85 cessed or de ressed parti-28 of t e machine engage 'the threaded apertures of the hanger.' fe'et 26, and said-openings may be circularor in the form ofslots-to permit vertical adjustment of the hangers if such is found necessary or desirable. The hanger member 23 hasv anextended portion'29pro- Jecting upward therefrom andr rigidly secured to said portion is the upper end of the clamping or bearing member 24. This member has an oset part 30 and two flange parts 31 and 32." The member 24 is barlike in form and has openings in the upper and lower portions thereof which are in alinement with threaded openings in the 100 hanger member 23. A' screw 33 passes through the openings in the upper portion of the hanger members 23 and 24, and a" screw 34 passes through the openings the lower portion fsaid members. 32 does not extend inwardfrom the portion 30 to the same extent as the partl so that the screw 33 may Iserve to' hold the part 29 of the member 2,3 and the flange 31 rigidly together, while the part 32' may he forced 10 The a'nge' 1,05

-by the offset portion 30 between the member 2l and the member 23, and substantially central of said boss is a tapered opening 37 which is largest on the side opposed to the innersurface of the hanger member Q4.

AAn opening 38'is formed in the member 24 and tapers from the inside toward the outer surface, and said opening 38 is in alinement with the opening 37 to form a recess in which. is a ball 39 forming a pivotal bearing for the type-bar. The member 23 has a relatively large opening 4() concentric with the openings 37 and 3S ofthe type-bar and the member 24. This opening 40 is somewhat smaller than the diameter of the boss 35 of the type-'bar and forms a substantially7 annular bearing for the type-bar.

It will be evident that by having the ball bearing on one side only of the type-bar and the type-bar provided with a plane bearing sur ace bearing directly against the hanger on the opposite side, the said typebar may be readily removed; that by means of the direct bearing the pressure of the ball at the`central portion will not be liable to bulge or bend the type-bar by reason of the pressure thereon and permits a very light typebar to be employed which is important in machines wherein it is desired that the same be light for transportation or other purposes; that by having a relatively large plane bearing surface there, is

not so much surface to grind and therefore a good bearing may be provided with little trouble; that by the construction shown, a large, narrow but substantial wearing surface is provided for the type-bar; that by making the member 2l of the hanger of s rinfr material'as steel for exam )le and b D 7 having the iiange 22 thereof lnormally away from the member' Q3, the screw 3a may be utilized to force the -part 30V inward and thereby adjust the members relatively in the 'direction of wear; that the single ball provides an effective pivot for the type-bar; and that the hanger may be readily made and assembled andmay be readily placed'in position'fofntllle machine frame. While I show a particular form of frame and key-levers, as well as supporting means for said levers, such features are not claimed herein as they form subject matter for separate pending applications tiled by me.

Havingthus described my invention, I

claim as new and desire to secure by Letters Patenttd l. The combination of a support, a typebar having an annular bearing surface bear-v ing directly against the support on one side thereof, a single ball forming a be 'ring lfor the other side of said type-bar an lserving vas a pivot therefor, and means for adjust ing the ball in the direction of wear.

Q. The combination of a support, a typebar having a plane bearing surface bearing directly against the support on one side thereof, and a single ball held partly by the support and forming a bearing for the other side of said type-bar and serving as a pivot therefor.

3. `The combination of a support having a plurality of relatively adjustable members, a type-bar having a plane bearing surface bearing directly against one of the members of the support on one side thereof, a body engaging the type-bar on one side thereof opposite the bearing surface and forming a pivot for the type-bar, and means for adjusting the members and moving the pivoting body in the direction of wear.

4f. The combination of a support, a typebar having a plane -annular bearing surface bearing directly against the support on one side only thereof, a body engaging the typebar on one side thereof opposite the bearing surface and forming a pivot for the type-bar, and means for adjusting the bod in the direction of wear. v

5. In a typewriting machine, the combination withv a type-bar having a plane bearing portion, of a hanger comprising two members forming a lspace between them for the end of the type-bar, a central single ball bearing for the type-bar-bet-ween one surface ioo thereof and one member of the hanger, and

.a relatively large and concentric plane wearing surface between the type-bar and the other member of the-hanger.

6. In a typewriting machine, the combination with a type-bar having a substantially circular boss, of a hanger Lcomprising two;l members forming a space between them for' the boss of the typebar, and a central ball bearing for the typebarv between one surface thereof and one member of the hanger, the

other of said members having a relatively lng aplurality of members providing a space and havingA one member provided with a tapered vopening-on one .side thereof extend- 'in-g into said space, a type-bar having a tapered opening on one side opposed to the tapered opening of the hanger and having Vtending into said space, a type-bar' having between said mem ers, a screw for securing a tapered opening on oneside opposed to the tapered o ening of the hanger member, and a single all locatedin said openings and forming a pivot-for said type-bar, said typebar having a plane-bearing surface bearing directly against the hanger on the side opposite1 the ball.

10.."The combination of a hanger comprising two plate-like members providing a space and having one member pre vided with' an opening extending into said space, a typebar having Vone end `located in said s ace and provided with an opening oppose to the opening of the hanger member, a single ball located in said openings and forming a pivot for said type-bar, sald type-bar having a plane bearing surface bearing directly against the inner side of one of the hanger members on the side opposite the ball, and means for adjusting on the direction of wear. ,y

11.'In' a typewriting machine, a hanger comprising a supportin Vmember adapted tov be secured to a part o the machine frame and adapted to hold the hanger Ain ajertical osition while in use, a plate-like member bald at one end to the other member and its other end adjustable relativelythereto, said plate-like member having an opening tapering from the inside toward the outside and having an offset ortion forming a space the plate-like member at one end to the supportlng member, a screw for adjustingthe other end of said member, a type-bar having one end located in the spacebetween the members and .having a tapered opening opposed to and in alinement withthe openingA ofthe plate-like member, and a single ball arrangedV in the tapered openings of the type-bar and the .plate mer'nber of the bracket.

12. In a typewriting machine, a hanger comprising a supportin member adapted to be secured to a part o the machine frame and adapted to hold the hanger in a vertical e of the members in' position while in us,a plate-like member held at one end to the other member and its other end adjustable. relatively thereto, said plate-'like member having an opening tapermg from the inside toward the outside and having an offset portion forming a space between said members, a type-bar having one end located in the space between the members and lhaving a tapered opening opposed to and in alinement with the openin ofthe plate-like member, and a single all arranged in the tapered openings of the typebar and the plate member of the bracket, said type-bar having a plane bearing surface bearing directly against the supporting member on the side opposite the ball pivot.

13. The combination of a hanger having two members, one of which has a tapered opening and the other has a relatively large opening surrounded by a substant-iall annular bearing surface, a type-bar having a central tapered opening alinedv with the hanger opening and bearing against the annular bearing surface,and a ball held in said tapered .openings andlforming a pivot for said type-bar.

14. The combination with a hanger having two plate-like members rigidly held' together at one end and adj ustably held at the other, ofa type-bar having a substantially circular and smooth end provided with a plane bearing surface on one yside and bearing directly a ainst one of the members, and a ball he d between the type-bar on one side and the other of the members substantially central of the circular portion of the type-barand serving as a pivot for said bar. y j

15. The combination with a hanger having two plate-like members rigidly held to'- gether at the upper end and adjustably at the lower end, one of saidv members having a relatively large o ening, of a type-bar having a substantiallymircular end having a plane surface bearing against the member of the hanger having the opening, and a ball held between the type-baron one side of one of the members substantially central of the circular portion of the typebar and servin as apivot for said bar.

16. The com ination with a hanger having a relatively large opening surrounded by a substantially annular bearing surface,

oi a type-bar having a plane surface engaging the bearingV surface, and a ball bearing substantially central of said opening on the side of thev type-bar opposite the .annular bearing surface.

17. The combination with a type-bar having an enlarged head with a central pivot opening, of a hanger having twoopposed members forming a bearing space for said `type-bar head, one of said members havin a tapered oplening in line with the, tapere opemng of t e type-bar, and the other memsaid typebar head, one of said members having a tapered opening in line with the tapered opening of the'type-bar, and the 1 other member having a relatively large opening concentric with the opening in the type-bar hanger and hanger member and cooperating with the type-bar forming a substantially annular bearing surface, and a pivot for said type-bar.

19. ln a type\\'1iti11g machine, a hanger comprising two members, one of which hasfeet adapted to be secured to a part of the machine frame, and 'with a projecting portion, one of said members having a relatively large opening, a bar-like member vertically arranged withrespect to the firstmentioned member and adapted to have one end secured to said member and its other end adjustable thereon, said bar-like member having an opening tapering from the inside toward the outside and having an oiset portion forming a space between said members, a screw for securing the bar-like member atene end to the supporting memA ber, a screw for adjusting the other end of said member, a type-bar having a tapered opening opposed to and in. alinement with the opening of the bar-like member and substantially central of the opening in the sup.

porting member, and a ball arranged 1n the tapere openings of-the type-bars and the vbar-like member of the bracket. '20. n a typewriting machine, a hanger comprising two members, one of which is adapted to be secured to a part of the ma.`

chine frame, one of said members having an opening, a bar-like member vertically arranged with respect to the first-mentioned member and adapted to have lts upper end -rigidly secured to said member and its lower end adjustable thereon, said bar-like member having an opening tapering'from the inside toward the outside and having an offset portion forming a space between said members, a type-bar having a tapered opening opposed to and in alinement with the opening of the bar-like member and substantially central of the opening in the supporting member, and a ball arranged in the tapered openings of the type-bars and the bar-like member of the bracket.

This specication signed and witnessed this ,Gth day of January A. D. 1911.

OTTO PETERMANN.

Witnesses:

W. A. ToWNER, J r., C. BARTELS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

v Washngton, D. C. 

